5 Questions
Which one of these is a common characteristic of a step-up transformer?
Primary voltage is lower than secondary voltage
What is the advantage of a magnetic disk over magnetic tape?
Easy storage and easy retrieval
What best represents X leads Y by 270 degrees?
X leads Y by 90 degrees
What is the disadvantage of CMOS?
Easily damaged by Static Electricity
Why are carbon brushes preferred over copper brushes?
They have less arcing
Study Notes
Transformers
- A common characteristic of a step-up transformer is that it increases the voltage of an alternating current.
Magnetic Storage
- A magnetic disk has the advantage of faster access time and random access capability over magnetic tape, which has sequential access.
Phasors
- X leads Y by 270 degrees represents a phase shift of 270 degrees or 3π/2 radians.
Integrated Circuits
- A disadvantage of CMOS (Complementary Metal-Oxide-Semiconductor) is that it can be susceptible to electrostatic discharge damage.
Brushes
- Carbon brushes are preferred over copper brushes because they are less likely to spark, which can be a safety issue in certain applications.
Test your knowledge on electrical transformers, radiation measurement, and storage devices with this quiz. Learn about the characteristics of step-up and step-down transformers, discover the device used to measure radiation in the sky, and explore the advantages of magnetic disks over magnetic tapes.
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